pyrometamorphism

pyrometamorphism

[¦pī·rō‚med·ə′mȯr‚fiz·əm]
(petrology)
Contact metamorphism at temperatures near the melting points of the component minerals.
References in periodicals archive ?
In general, natural clinker is a mineralogical and chemically complex mixture in which the amount of each mineral phase present depends on the original composition of the protolith from which it was formed by pyrometamorphism, the mixture characteristics, the burning conditions, and the thermal history of the material, among others (Jones et al.
Evidence supports the fact that claystones, siltstones and sandstones adjacent to coal beds were metamorphosed by the spontaneous combustion of coal, recording continuous mineralogical and textural changes from relatively unaltered rocks to molten material (vesicular slag) during pyrometamorphism.